Japan's royal family led by Emperor Naruhito paid respects Friday to atomic bomb victims in Nagasaki as he wrapped up his tour of prayer to some of the worst-hit places and Japan marks 80 years since the tragedy.

Naruhito was with his wife Empress Masako and their daughter Princess Aiko as they bowed deeply at the cenotaph for the atomic bomb victims and offered white bouquets at the peace park in Nagasaki, Japan.

The United States dropped a plutonium bomb on the southwestern city of Nagasaki at 11:02 a.m. August 9, 1945, killing over 70,000 people by the end of that year. 

The attack came only three days after the U.S. dropped a uranium bomb on Hiroshima, destroying the city and killing 140,000 others.

Japan surrendered on August 15, ending World War II and its nearly half-century aggression in Asia.

Naruhito has repeatedly stressed the need to remember and keep telling the tragedy of war to younger generations. 

He demonstrates that with the company of his 23-year-old daughter Aiko, who has shown eagerness to learn.

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AP video shot by Mayuko Ono